private static IEnumerable <ChangeLog> GetChanges(this OnlineStoreDbContext dbContext, IUserInfo userInfo)
{
var exclusions = dbContext.ChangeLogExclusions.ToList();
foreach (var entry in dbContext.ChangeTracker.Entries())
{
if (entry.State != EntityState.Modified)
{
continue;
}
var entityType = entry.Entity.GetType();
if (exclusions.Count(item => item.EntityName == entityType.Name && item.PropertyName == "*") == 1)
{
yield break;
}
foreach (var property in entityType.GetTypeInfo().DeclaredProperties)
{
// Validate if there is an exclusion for *.Property
if (exclusions.Count(item => item.EntityName == "*" && string.Compare(item.PropertyName, property.Name, true) == 0) == 1)
{
continue;
}
// Validate if there is an exclusion for Entity.Property
if (exclusions.Count(item => item.EntityName == entityType.Name && string.Compare(item.PropertyName, property.Name, true) == 0) == 1)
{
continue;
}
var originalValue = entry.Property(property.Name).OriginalValue;
var currentValue = entry.Property(property.Name).CurrentValue;
if (string.Concat(originalValue) == string.Concat(currentValue))
{
continue;
}
// todo: improve the way to retrieve primary key value from entity instance
var key = entry.Entity.GetType().GetProperties().First().GetValue(entry.Entity, null).ToString();
yield return(new ChangeLog
{
ClassName = entityType.Name,
PropertyName = property.Name,
Key = key,
OriginalValue = originalValue == null ? string.Empty : originalValue.ToString(),
CurrentValue = currentValue == null ? string.Empty : currentValue.ToString(),
UserName = userInfo.UserName,
ChangeDate = DateTime.Now
});
}
}
}
public static void Update <TEntity>(this OnlineStoreDbContext dbContext, TEntity entity, IUserInfo userInfo) where TEntity : class, IAuditableEntity
{
if (entity is IAuditableEntity cast)
{
if (string.IsNullOrEmpty(cast.LastUpdateUser))
{
cast.LastUpdateUser = userInfo.UserName;
}
if (!cast.LastUpdateDateTime.HasValue)
{
cast.LastUpdateDateTime = DateTime.Now;
}
}
dbContext.Set <TEntity>().Update(entity);
}
public static void Remove <TEntity>(this OnlineStoreDbContext dbContext, TEntity entity) where TEntity : class, IAuditableEntity => dbContext.Set <TEntity>().Remove(entity);